Auxiliary frame

By adopting the "mouth" shaped frame structure and hollow reinforcement design, the problems of large weight and difficult to control the dimensional accuracy of the traditional subframe are solved, and lightweight and high-precision subframe manufacturing is achieved, which improves the performance of the vehicle.

CN222808163UActive Publication Date: 2025-04-29ZHEJIANG WANXIANG SYST +1
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Patent Information

Application Number
CN202421651285.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-12
Publication Date
2025-04-29
Estimated Expiration
2034-07-12

AI Technical Summary

Technical Problem

The traditional subframe has a large weight, large welding deformation, and difficult to control the dimensional accuracy, which affects the assembly and handling performance of the entire vehicle.

Method used

The "mouth" shaped frame structure is adopted, and the frame is formed through the left longitudinal beam, the right longitudinal beam, the front transverse beam and the rear transverse beam, and the installation bracket is extended at four corners. The interior is made of hollow structure and reinforcement ribs, and weight reduction holes are designed to reduce weight and manufacturing difficulty.

Benefits of technology

It effectively reduces the overall weight of the subframe, reduces welding deformation, and improves the dimensional control accuracy during processing, thereby improving the performance of the entire vehicle.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an auxiliary frame, which relates to the field of automobile parts and comprises a left longitudinal beam, a right longitudinal beam, a front cross beam and a rear cross beam which form a square frame structure. Four corners of the square frame structure respectively extend in four corresponding directions to form extension parts, and the end of each extension part is provided with a mounting bracket; an exhaust pipe bracket mounting seat is arranged on the rear cross beam and is used for fixing an exhaust pipe bracket; the left spring arm mounting bracket and the right spring arm mounting bracket are arranged on the rear cross beam on the two sides of the exhaust pipe bracket mounting seat and are used for fixedly connecting a left spring arm and a right spring arm; the left bracket module is arranged on the left longitudinal beam and is used for connecting a control arm and a stabilizer bar on the left side of the vehicle; the right support module is arranged on the right longitudinal beam and used for being connected with a control arm and a stabilizer bar on the right side of the vehicle. The overall weight of the auxiliary frame is reduced, the welding deformation of the auxiliary frame is reduced, the size control precision during machining is improved, and therefore the performance of the whole automobile is improved.
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Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to a subframe. Background Art

[0002] The subframe is the skeleton of the front and rear axles, and its function is to support the chassis components, improve the isolation of road vibration and noise, and increase the connection stiffness of the suspension. As an indispensable part of the automobile chassis, the subframe bears very complex loads and fatigue failure problems under braking, vertical impact, steering, reversing, acceleration and other working conditions.

[0003] Traditional subframes are mostly made of steel materials through a stamping and welding process. The subframes are heavy, have large welding deformation, and are difficult to control in terms of dimensional accuracy, which affects the assembly and handling performance of the entire vehicle.

[0004] As energy conservation and environmental protection have become topics of widespread concern, lightweight technology has been widely used in the field of ordinary automobiles, which can improve handling and save fuel. Therefore, an automotive aluminum alloy subframe with a small number of parts, good weight reduction effect and good dimensional accuracy is needed. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a subframe, which reduces the overall weight of the subframe, reduces the welding deformation of the subframe, and improves the dimensional control accuracy during processing, thereby improving the performance of the entire vehicle.

[0006] The purpose of the utility model is achieved through the following technical solution: the auxiliary frame comprises:

[0007] a left longitudinal beam located on the left side of the sub-frame, and a right longitudinal beam located on the right side of the sub-frame;

[0008] A front crossbeam located at the front side of the sub-frame and a rear crossbeam located at the rear side of the sub-frame, the front crossbeam and the rear crossbeam are both connected between the left longitudinal beam and the right longitudinal beam, so that the left longitudinal beam, the right longitudinal beam, the front crossbeam and the rear crossbeam form a "mouth" shaped frame structure;

[0009] The extension part is formed by extending the four corners of the "mouth"-shaped frame structure in four corresponding directions, and a mounting bracket is provided at the end of each extension part to be fixedly connected to the vehicle body as a bushing mounting hole;

[0010] An exhaust pipe bracket mounting seat is arranged on the rear cross beam and is used to fix the exhaust pipe bracket;

[0011] The left spring arm mounting bracket and the right spring arm mounting bracket are arranged on the rear cross beams on both sides of the exhaust pipe bracket mounting seat, and are used to fix and connect the left and right spring arms;

[0012] A left bracket module, disposed on the left longitudinal beam, for connecting the control arm and the stabilizer bar on the left side of the vehicle; and

[0013] The right bracket module is arranged on the right longitudinal beam and is used to connect the control arm and the stabilizer bar on the right side of the vehicle.

[0014] As a further technical solution, the mounting bracket includes a left rear mounting bracket arranged between the left longitudinal beam and the rear cross beam, a right rear mounting bracket arranged between the right longitudinal beam and the rear cross beam, a left front mounting bracket arranged between the left longitudinal beam and the front cross beam, and a right front mounting bracket arranged between the right longitudinal beam and the front cross beam.

[0015] As a further technical solution, a process boss hole A is set on the extension part near the left rear mounting bracket, a process boss hole B is set on the extension part near the right rear mounting bracket, a process boss hole C is set on the extension part near the left front mounting bracket, and a process boss hole D is set on the extension part near the right front mounting bracket; each process boss hole serves as a positioning reference hole during the machining process of the subframe.

[0016] As a further technical solution, the left spring arm mounting bracket, the right spring arm mounting bracket and the exhaust pipe bracket mounting seat are integrated into the rear cross beam in an integrated manner.

[0017] As a further technical solution, the left bracket module includes a left upper control arm mounting bracket for connecting the left upper control arm, a left lower control arm mounting bracket for connecting the left lower control arm, and a stabilizer bar left mounting bracket for connecting the left stabilizer bar.

[0018] As a further technical solution, the right bracket module includes a right upper control arm mounting bracket for connecting the right upper control arm, a right lower control arm mounting bracket for connecting the right lower control arm, and a stabilizer bar right mounting bracket for connecting the right stabilizer bar.

[0019] As a further technical solution, waist-shaped holes A are symmetrically arranged on the left spring arm mounting bracket and the right spring arm mounting bracket, and waist-shaped holes B are symmetrically arranged on the left bracket module and the right bracket module. The waist-shaped holes A and B are used to fix eccentric bolts to facilitate adjustment of the four-wheel alignment of the vehicle.

[0020] As a further technical solution, the interior of the sub-frame adopts a hollow structure with a wall thickness of 4-6 mm, and a plurality of reinforcing ribs are integrated on the inner wall of the hollow structure.

[0021] As a further technical solution, weight reduction holes A, B, C, D, E, P, Q, and R are provided on the rear cross beam, weight reduction hole F is provided on the left support module, weight reduction hole L is provided on the right support module, and weight reduction holes G, H, I, J, K, M, N, and O are provided on the front cross beam.

[0022] The beneficial effects of the present utility model are as follows:

[0023] 1. The overall subframe adopts a "square" - shaped frame structure. Since the inside of the "square" is hollow, a large amount of steel material usage is saved, which can effectively reduce the weight of the whole vehicle and achieve the effect of light weight.

[0024] 2. Installation brackets are provided after the four corners of the "square" - shaped frame structure are extended, and are fixedly connected to the vehicle body as bushing installation holes, playing the role of fixing the subframe.

[0025] 3. The inside of the subframe is a hollow structure, and the overall design is a non - uniform wall thickness structure of 4 - 6 mm. According to the force conditions of the parts inside, several reinforcing ribs are arranged to ensure that the whole frame has sufficient strength and stiffness.

[0026] 4. Weight reduction holes are designed at local positions of the front and rear cross beams, effectively reducing the forming difficulty of the parts.

[0027] 5. Waist - shaped holes are symmetrically provided on the left support module and the right support module to fix eccentric bolts. After twisting the eccentric bolts, the four - wheel alignment of the vehicle can be adjusted to make the camber angle and toe - in angle of the tires meet the high handling performance of the whole vehicle. Description of the Drawings

[0028] Figure 1 is a schematic three - dimensional structure of the present utility model Figure 1 .

[0029] Figure 2 is a schematic three - dimensional structure of the present utility model Figure 2 .

[0030] Figure 3 is a schematic three - dimensional structure of the present utility model Figure 3 .

[0031] Figure 4 is a partial cross - sectional view of the present utility model.

[0032] Description of the reference numerals: left rear mounting bracket 1, right rear mounting bracket 2, left spring arm mounting bracket 3, right spring arm mounting bracket 4, left longitudinal beam 5, right longitudinal beam 6, stabilizer bar left mounting bracket 7, stabilizer bar right mounting bracket 8, left lower control arm mounting bracket 9, right lower control arm mounting bracket 10, left upper control arm mounting bracket 11, right upper control arm mounting bracket 12, left front mounting bracket 13, right front mounting bracket 14, front cross beam 15, rear cross beam 16, exhaust pipe bracket mounting seat 17, right bracket module 18, left bracket module 19, process boss hole A 25. Process boss hole B26, process boss hole C27, process boss hole D28, waist-shaped hole A29, waist-shaped hole B30, weight reduction hole A31, weight reduction hole B32, weight reduction hole C33, weight reduction hole D34, weight reduction hole E35, weight reduction hole F36, weight reduction hole G37, weight reduction hole H38, weight reduction hole I39, weight reduction hole J40, weight reduction hole K41, weight reduction hole L42, weight reduction hole M43, weight reduction hole N44, weight reduction hole O45, weight reduction hole P46, weight reduction hole Q47, weight reduction hole R48, reinforcement rib 49 and weight reduction hole S50. DETAILED DESCRIPTION

[0033] The utility model will be described in detail below with reference to the accompanying drawings:

[0034] Example: As attached Figures 1 to 4 As shown, the subframe includes a left rear mounting bracket 1, a right rear mounting bracket 2, a left spring arm mounting bracket 3, a right spring arm mounting bracket 4, a left longitudinal beam 5, a right longitudinal beam 6, a left stabilizer bar mounting bracket 7, a right stabilizer bar mounting bracket 8, a left lower control arm mounting bracket 9, a right lower control arm mounting bracket 10, a left upper control arm mounting bracket 11, a right upper control arm mounting bracket 12, a left front mounting bracket 13, a right front mounting bracket 14, a front cross beam 15, a rear cross beam 16, an exhaust pipe bracket mounting seat 17, a right bracket module 18, a left bracket module 19, and a process boss Hole A25, process boss hole B26, process boss hole C27, process boss hole D28, waist-shaped hole A29, waist-shaped hole B30, weight-reducing hole A31, weight-reducing hole B32, weight-reducing hole C33, weight-reducing hole D34, weight-reducing hole E35, weight-reducing hole F36, weight-reducing hole G37, weight-reducing hole H38, weight-reducing hole I39, weight-reducing hole J40, weight-reducing hole K41, weight-reducing hole L42, weight-reducing hole M43, weight-reducing hole N44, weight-reducing hole O45, weight-reducing hole P46, weight-reducing hole Q47, weight-reducing hole R48, reinforcement rib 49, weight-reducing hole S50.

[0035] like Figure 1As shown, the left longitudinal beam 5 is located on the left side of the sub-frame, the right longitudinal beam 6 is located on the right side of the sub-frame, the front cross beam 15 is located on the front side of the sub-frame, and the rear cross beam 16 is located on the rear side of the sub-frame. The front cross beam 15 and the rear cross beam 16 are connected between the left longitudinal beam 5 and the right longitudinal beam 6. The four of them are surrounded to form a "mouth"-shaped frame structure. The four corners of the "mouth"-shaped frame structure extend in four corresponding directions to form four extensions, thereby forming the main structure of the sub-frame. A mounting bracket is set at the end of each extension, which is fixedly connected to the vehicle body as a bushing mounting hole to fix the sub-frame.

[0036] The mounting bracket includes a left rear mounting bracket 1 arranged between the left longitudinal beam 5 and the rear cross beam 16, a right rear mounting bracket 2 arranged between the right longitudinal beam 6 and the rear cross beam 16, a left front mounting bracket 13 arranged between the left longitudinal beam 5 and the front cross beam 15, and a right front mounting bracket 14 arranged between the right longitudinal beam 6 and the front cross beam 15.

[0037] A process boss hole A25 is set at the extension part near the left rear mounting bracket 1, a process boss hole B26 is set at the extension part near the right rear mounting bracket 2, a process boss hole C27 is set at the extension part near the left front mounting bracket 13, and a process boss hole D28 is set at the extension part near the right front mounting bracket 14; each process boss hole serves as a positioning reference hole during the machining process of the subframe.

[0038] Furthermore, the left spring arm mounting bracket 3, the right spring arm mounting bracket 4 and the exhaust pipe bracket mounting seat 17 are integrated on the rear cross beam 16. The exhaust pipe bracket mounting seat 17 is used to fix the exhaust pipe bracket of the vehicle; the left spring arm mounting bracket 3 and the right spring arm mounting bracket 4 are respectively arranged on both sides of the exhaust pipe bracket mounting seat 17 to fix the left and right spring arms of the vehicle.

[0039] Figure 1 The dotted frame portion on the left side is the left bracket module 19, which is arranged on the left longitudinal beam 5. The left bracket module 19 includes a left upper control arm mounting bracket 11 for connecting the left upper control arm, a left lower control arm mounting bracket 9 for connecting the left lower control arm, and a stabilizer bar left mounting bracket 7 for connecting the left stabilizer bar. Figure 1 The dotted frame portion on the middle right is the right bracket module 18, which is arranged on the right longitudinal beam 6. The right bracket module 18 includes a right upper control arm mounting bracket 12 for connecting the right upper control arm, a right lower control arm mounting bracket 10 for connecting the right lower control arm, and a stabilizer bar right mounting bracket 8 for connecting the right stabilizer bar.

[0040] Preferably, if Figure 3As shown, waist-shaped holes A29 are symmetrically arranged on the left spring arm mounting bracket 3 and the right spring arm mounting bracket 4, and waist-shaped holes B30 are symmetrically arranged on the left bracket module 19 and the right bracket module 18. The waist-shaped holes A29 and the waist-shaped holes B30 are used to fix the eccentric bolts. After twisting the eccentric bolts, the four-wheel alignment of the vehicle can be adjusted so that the camber angle and toe angle of the tire meet the handling performance of the whole vehicle.

[0041] Reference Figure 4 The subframe has a hollow structure with a wall thickness of 4-6 mm. A plurality of reinforcing ribs 49 are integrated on the inner wall of the hollow structure. According to the stress conditions of the internal structure, reinforcing ribs are added at different positions to ensure that the entire frame has sufficient strength and rigidity.

[0042] like Figure 3 , 4 As shown, weight-reducing holes A31, B32, C33, D34, E35, P46, Q47 and R48 are provided on the rear cross beam 16, weight-reducing holes F36 are provided on the left bracket module 19, weight-reducing holes L42 are provided on the right bracket module 18, and weight-reducing holes G37, H38, I39, J40, K41, M43, N44 and O45 are provided on the front cross beam 15. A weight-reducing hole S50 is provided at the connection between the left front mounting bracket 13 and the extension. The design of the weight-reducing holes effectively reduces the difficulty of frame manufacturing, reduces the use of steel, reduces production costs, and is conducive to the lightweighting of the entire vehicle.

[0043] The utility model adopts a "mouth"-shaped hollow frame structure to achieve a good weight reduction effect. At the same time, a plurality of weight reduction holes are designed at local positions of the front and rear beams, which effectively reduces the difficulty of forming parts, further plays a role in weight reduction, reduces the overall weight of the subframe, reduces the welding deformation of the subframe, and improves the dimensional control accuracy during processing, thereby improving the performance of the entire vehicle.

[0044] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A subframe, characterized in that: Including: A left longitudinal beam (5) located on the left side of the subframe and a right longitudinal beam (6) located on the right side of the subframe; A front crossbeam (15) located on the front side of the subframe and a rear crossbeam (16) located on the rear side of the subframe. The front crossbeam (15) and the rear crossbeam (16) are both connected between the left longitudinal beam (5) and the right longitudinal beam (6), so that the left longitudinal beam (5), the right longitudinal beam (6), the front crossbeam (15) and the rear crossbeam (16) form a "mouth"-shaped frame structure; An extension part, which is formed by extending from the four corners of the "mouth"-shaped frame structure to four corresponding directions respectively. An installation bracket is arranged at the end of each extension part, and is fixedly connected to the vehicle body as a bushing installation hole; An exhaust pipe bracket mounting seat (17), which is arranged on the rear crossbeam (16) and is used for fixing the exhaust pipe bracket; A left spring arm mounting bracket (3) and a right spring arm mounting bracket (4), which are arranged on the rear crossbeam (16) on both sides of the exhaust pipe bracket mounting seat (17) and are used for fixedly connecting the left and right spring arms; A left bracket module (19), which is arranged on the left longitudinal beam (5) and is used for connecting the control arm and the stabilizer bar on the left side of the vehicle; And A right bracket module (18), which is arranged on the right longitudinal beam (6) and is used for connecting the control arm and the stabilizer bar on the right side of the vehicle.

2. The subframe according to claim 1, characterized in that: The installation bracket includes a left rear installation bracket (1) arranged between the left longitudinal beam (5) and the rear crossbeam (16), a right rear installation bracket (2) arranged between the right longitudinal beam (6) and the rear crossbeam (16), a left front installation bracket (13) arranged between the left longitudinal beam (5) and the front crossbeam (15), and a right front installation bracket (14) arranged between the right longitudinal beam (6) and the front crossbeam (15).

3. The subframe according to claim 2, characterized in that: A process boss hole A (25) is arranged at the extension part near the left rear installation bracket (1), a process boss hole B (26) is arranged at the extension part near the right rear installation bracket (2), a process boss hole C (27) is arranged at the extension part near the left front installation bracket (13), and a process boss hole D (28) is arranged at the extension part near the right front installation bracket (14); each process boss hole serves as a positioning reference hole during the machining process of the subframe.

4. The subframe according to claim 1, characterized in that: The left spring arm mounting bracket (3), the right spring arm mounting bracket (4) and the exhaust pipe bracket mounting seat (17) are integrally formed on the rear crossbeam (16).

5. The subframe according to claim 1, characterized in that: The left bracket module (19) includes an upper left control arm mounting bracket (11) for connecting the upper left control arm, a lower left control arm mounting bracket (9) for connecting the lower left control arm, and a stabilizer bar left mounting bracket (7) for connecting the left stabilizer bar.

6. The subframe according to claim 1, characterized in that: The right bracket module (18) includes an upper right control arm mounting bracket (12) for connecting the upper right control arm, a lower right control arm mounting bracket (10) for connecting the lower right control arm, and a stabilizer bar right mounting bracket (8) for connecting the right stabilizer bar.

7. The subframe according to claim 1, characterized in that: The left spring arm mounting bracket (3) and the right spring arm mounting bracket (4) are symmetrically provided with waist-shaped holes A (29), and the left bracket module (19) and the right bracket module (18) are symmetrically provided with waist-shaped holes B (30). The waist-shaped holes A (29) and the waist-shaped holes B (30) are used to fix eccentric bolts, so as to facilitate the adjustment of the four-wheel alignment of the vehicle.

8. The subframe according to claim 1, characterized in that: The auxiliary frame has a hollow structure inside with a wall thickness of 4-6 mm. A plurality of reinforcing ribs (49) are integrated on the inner wall of the hollow structure.

9. The subframe according to claim 1, characterized in that: The rear cross beam (16) is provided with a weight reduction hole A (31), a weight reduction hole B (32), a weight reduction hole C (33), a weight reduction hole D (34), a weight reduction hole E (35), a weight reduction hole P (46), a weight reduction hole Q (47) and a weight reduction hole R (48); the left bracket module (19) is provided with a weight reduction hole F (36); the right bracket module (18) is provided with a weight reduction hole L (42); the front cross beam (15) is provided with a weight reduction hole G (37), a weight reduction hole H (38), a weight reduction hole I (39), a weight reduction hole J (40), a weight reduction hole K (41), a weight reduction hole M (43), a weight reduction hole N (44) and a weight reduction hole O (45).